Поиск id картинки по url

function get_image_id_by_url($image_url) {
    global $wpdb;
    $attachment = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE guid='%s';", $image_url));
    if (isset($attachment[0]) && !empty($attachment[0])) {
        return $attachment[0];
    }
    return;
}